Office 2013 is a Microsoft desktop and cloud application. It is an open source application it can use any one without any cost and it is totally free. It's various versions include.
Word 2013
Excel 2013
Powerpoint 2013
Access 2013
Outlook 2013
OneNote 2013
Publisher
Excel 2013
Powerpoint 2013
Access 2013
Outlook 2013
OneNote 2013
Publisher